William



(No Model.)

W. O. BRONSON.

STEAM HEATER.

No. 345,879. Patented July 20, 1886.

WITNESS ATTORNEYS.

UNITED STATES PATENT ()EEICE.

\VILLIAM O. BRONSON, OF SARATOGA SPRINGS, NE\V YORK.

STEAM-HEATER.

SPECIFICATION forming part of Letters Patent No. 3 16,2579, dated July20, 1856.

Application tiled Ma 3, 1880. Serial No. 201,023.

(No modrl.)

which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a sectional side elevation of my improved steam-heater. Fig.2 is a sectional plan View of the same taken through the line a: m,Fig. 1. Fig. 3 is asectional plan View of the same taken through theline y y, Fig. l.

The object of this invention is to improve the construction of thesteam-heaters for which Letters Patent No. 800,207 were issued to meJune 10, 1884:, in such a manner as to make them more eifective anddurable in use.

The invention consists in the construction and combination of variousparts of the steamheater, as will be hereinafter fully described.

A represents the base of the heater, which is made of iron or othersuitable material, and with the outer part of the top of which isconnected the lower edge of the sheet-iron casing B.

In the center of the top of the casing 13 is formed an aperture, withwhich is connected the smoke-pipe 0.

Upon the inner part of the top of the base A rests the annularwater-chamber D, beneath the central aperture of which is supported thegrate E, and which forms the side walls of the fire-chamber.

Vith the outer part of the top of the annular water-chamber D areconnected the lower ends of a circle of tubes, F, the upper ends ofwhich are connected with the outer part of the bottom of the circularwater-chamber G, which is made of a little less diameter than the casingB, and is placed a little below the top of the said casing, as shown inFig. 1, so that the products of combustion will have a free passage allaround the sides and at the top of the said water-chamber G.

\Vith the inner part of the top of the annular water-chamber D areconnected the lower ends of a circle of short tubes, H, the upper endsof which are connected with the outer part of the lower side of thewater-chamber I. With the outer part of the top of the waterchamber Iare connected the lower ends of the circle of tubes J, the upper ends ofwhich are connected with the water-chamber G.

Through the center of the water-chamber I is formed an aperture, K, withthe upper end of which is connected the lower end of the inclined chuteL, so that the lower end of the said chute will be out of direct contactwith the fire, and will thus be prevented from being burned off. Thechute L passes in through an opening in the upper part of the front ofthe casing B, and serves as a magazine for coal, making the heater aself-feeder.

\Vith the upper side of the water-chamber I, around the feed-aperture K,are connected the lower ends of a circle of tubes, M, the upper ends ofwhich are connected with the lower side of the water-chamber G.

Through the waterchamber I, in the'space between the tubes J and M, isformed an aperture, N, curved in the arc of a circle, as shown in Fig.2. The circles of the pipes F J M are interrupted for the passage of thechute L, and the circles of pipes F H below the water-chamber I, and inthe vertical plane of the chute L, are interrupted to give convenientaccess to the fire-chamber to start the fire, a door, 0, being formed inthe casing B opposite the space formed by the interruption of the saidpipes.

Vith the water-chamber Dis connected the end of a feed-pipe, I, and withthe waterchamber G is connected the end of one or more pipes, Q, throughwhich the steam is conducted to the rooms to be heated.

Vithin the casing B, and close to the circle of tubes F, is placed acasing, R, the lower edge of which rests upon the outer edge of the topof the annular water chamber D. The up per edge of the casing B does notextend quite to the water-chamber G, a space, S, being left for thepassage of the products of combustion. With this construction theproducts of combustion pass up through the curved aperture N in thewater-chamber I, and around the outer edge of the said chamber, throughthe spaces between the tubes F, circulate around all the tubes,and passthrough the space S and around the water-chamber G to the smokepipe 0,heating the water in the water chambers and tubes very quickly andgenerating steam very rapidly.

The water chambers and tubes are all connected, so that the water has afree circulation. The casing R keeps the products of combustion close tothe pipes F and prevents the waste of heat by radiation.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is'

In a steamheater, the combinatiomwith the :5

tubes F J M H and the chute L, of the water chamber I, having curvedaperture N, for the passage of the products of combustion, and centralaperture, K, for the passage of the coal, substantially as herein shownand de- 20 scribed, whereby the products of combustion have a freeupward passage and the lower end of the chute is protected from thefire, as set forth.

WILLIAM (J. BRONSON. Witnesses:

JOHN R. PUTNAM, J. F. TUANICK.

